Suction feeding machine



Dec. 1924- 1,518,522

H. KREJCA SUCTION FEEDING MACHINE 4 Sheets-Sheep 1 Filed June 18, 1923IN VEN TOR Hen/"g fire 'ca r v A TTORNE Y H. KREJCA SUCTION FEEDINGMACHINE Filed June 18, 1923 I 4 Sheets-Sheet 2 Dem 9 4 I 1,518,522

IN VEN TOR Hen/"y K/"e 'ca A TTORNE Y DEC. v

H.KREJCA SUCTI ON FEEDING MACHI NE 4 Sheets-Shet Filed June 18, 1 925 ATTORNE Y Dec. 9, 1924. 1,518,522

1-1. KREJCA SUCTION FEEDING MACHINE 4 Sheets-Sheet 4 Filed June 18, 1923BY W ATTORNEY Patented Dec. 9, 1924.

UNITED STATES PATENT OFFICE.

HENRY IREJ'CA, Q1 PEARL RIVER; NEW YORK.

SUCTION FEEDING :HACHINE Application fled June 1a, 1923. Serial no.646,198.

To all whom it may concern: v

Be itknown that I, HENRY KREJCA, a citizen ofUnited States residing atPearl River, in the county of Iiockland and State l of New York, have-invented certain new and useful Improvements in SuctionFeedingMachines, of which the following is a specification.

'vention relates to improvements 1 in. apparatus for single sheets ofpaper froma stack'or pile of the same, one

after another, atany de sired rate of speed, so long asmay be r uired.

Oneof the several 0 jects of the invention.

15 is to provide an apparatus having a detachable platform provided withpivoted, casterlike wheels,'bywhich it may he moved from place to placein the manner. of a truck,

receiving a load. of paper from a stock supply and thereafter returnedto the apparat'us, engaged with vertical guiding columns and anelevating mechanism so that the uppermost sheets are broughtlevel withthe 35 A further aim is in the provision of auto.-

matic sucker devices clamping. upon the uppermost sheet, then raisingand projectin the same forward (center between feed ro ers and thereuponreleasing. the sheet. 0 Other objects are, to providemeans preventingthedischarge of "more. thanv arsingle,

sheet at each delivery. tothe press or other device to which the paperis fed; to coordinate the several instrumentalities to 45 ogerate intime and. harmony to produce an e cient operative strudiure in wh chmanual labor is reduced to a .minimum,.supervision onl being required;'

v several aimsand' object s, togetherv 60 with others which will becomeapparent as the description progresses, are accomplished bmation ofparts hereafter described euppersheets permitting the entrance of airtherebetweeii and tending to.

' beams are provided with 1 b the novel design, construction and 100millustrated in the accompanying drawings, forming a part hereof, and inwhich Figure 1 is a plan view ofanembodiment of the invention. V.

Figure 2 is a rear elevationalview thereof. Figure 3 is a sideelevational view of the same.

Figure 4 is a transverse sectional view taken on line H of Figure 1.Figure 5 is a similar sectional view taken on line 5-5 of Figure 1. q IH Figure 6 is an elevational. view. looking from the opposite side ofthe apparatus; 1

. Figure'7 1s a fragmentary sectional view ure 2.

Figure 8 is a sectional view illustrating the construction of thesuckerhead.

Referring to the drawing more in detail,

the numeral desi ates a pair of side beams suited to rest upon the floorthese beams having between them at the front a rigid cross beam 16firmly securing them inspaced relation.

A pair of columns 17 extend upward at the front from the side beams, asimilar pair 18 being disposed at the rear, both pair suppontm'g sideframe elements 19 and 20 respect1vely at the right and left hand sidesof the apparatus, the frame side's beinlg stiffened by a cross beam 21extending etween the front columns. a An elongated rectangular frame iscomposed of endbeams 23 and side beams over which is r'emovably engagedthe plat forms proper, the same being provided with upstanding guiderods 25 used to position the paper. 1

Extending down at each corner of the frame are swivelled truck wheels orcasters 26 permittin trundling .the platform upon" any level an: ace, asfrom a storage of paper to the mechanism.

This platform is between the rear uprights 18 and the end and 28 adaptedto contact with the rear side of theuprig'hts, limiting theadvance ofthe platform and slide as the platform is raised.

When. the platform is then by the uprights, it is heldfro'm movedoutwardly by pairs of ins 29 making slidtaken approximately on line 7-7of Figide blocks 100 of as length 88130 fit ing contact wlththe r'ontsurfaces-of the which may be inserted sheaves 36 rotatable upon pins 37fixed in the plates 31 and movable with them uponoperating thehandles33.

A shaft 40 is journalled in the fraine sides 19' and 20, this shafthaving fixed u on it drums 41 adjacent the frames, one of the drums,next the side 20 being fast with aratchet 42 engaged by a pawl 43 drawninto operative position by a spring 44. Cables 59, fixed at one end, arewound upon the drums, the bights of'the cables passing around thesheaves 36 so as to raise the platform when" the shaft 40 is turned inonedirection. a

The end of the shaft 40 projecting through i the frame 20 has ffixedupon 1t a worm wh'eel'45, spaced fromthe frameby a plate 46, pivoted at47,- the plate having a slot in which the shaft operates as the plate ismoved. i

Said plate is provided with bearings 48 in which is mounted a shaft 49carrying a worm 50 engageable with the worm wheel 45 and provided with areduced extension having a hand wheel 51 by which the worm may berotated.

The worm 50 is held in engagement with the wheel 45 by means of a pin 52fixed in a spring arm 53 attached at its upper end to the frame side andextendingdown to make contact with aprojectinglug 54 carried on theplatform element 23 so that as the platform is raised a certain height,7 the arm will be moved outwardly, allow-Q ing the plate 46 to turn onits pivot and disconnect the worm from the wheel 45, this effect-beingaccomplished by by a pull spring 55. r

front of the frame, has fixed'at oneend a spur gear 61 beyond which is acam '62 having a sin le' throw, this cam actuating a lever 63 the hub 64of which encircles the shaft 49'and-actuates it by means of a-ratchetcontained in the hub so that at each move ment ofthe lever, by'meansofthe cam, the

shaft is given an intermittent progressive 'movement,"whieh in turn istransmitted to an intermediate pinion 67 meshing withthe gear 62,- asbest seen in Figure 3.

Fixed on the shaft 60 at its opposite end gravity assisted is a. cam 68operating against a roller 69 fixed on the end of an arm 70 containingleading to a suction device (not shown);v

whereby a" partial vacuum is produced.

A pin 76 is engageable by a pivoted dog 77 operated by a link 78attached to a lever 79 whenever it "is desired to prevent the tube 73vfrom turning.

Attached to the tube '73 are a'pair of rigid, levers 80, I adj ustablyclamped thereon, these levers carrying sucker; heads 81 of rubber andprovided with sprin ,con-

trolled valves 82 to which are engage flexible tubes 83'connecting withthe tube, andi a feeler disc ,84' for actuating the valve is arrangedaxially'of the suckers 81.

It is also to be noted that a port 85 is formed in the framecommunicating with an openingin the e'ccentric'when in acertainposition, whereb 7 tubes and suckers is rokento release the I sheet'ofpaper previously'raised by them."

The advance edge of the. paper blanks the vacuum in the" a a resting onthe platform are guided and I.

alin'edtby a pair'of vertical .rods 86 secured in the" cross bars of theframe and the upper sheets of the paper are loosened fronrthe pile byopposed toothed elements 87 driven by'a gear train, generally indicatedat 88 in Figure 4, from the driven shaft" a 60, these gear trains beingcarried in brack-fi ets 89 hanging pendant fronithe shaft 60 and guidedat their lower ends" by engagement with a transverse rod 90 disposed"etween the frame sides.

The rod 90 has fixed to it a pair offfin gers '91, curved to'contactwith the*top of the pile and'to clear the shaft 65. Motion is'transmittedto the rod' 90 by means ofa to the drive shaft" 60.

Another cam '94 fixed to the shaft 60 operates a lever 95 fixedon :a rod:96, said rod carrying arms 97 upon the ends of which arefriction'wheels 98, arranged with relation to rolls 99 on the high speedshaft a A series of paper fingers 100 are secured to another rod '101 towhich the lever 79 is 7 crank arm 92 operated by a crank 93 fixed Thedrive shaft 60, passing through the fixed, these fingers delivering thesheets of paper outwardly from the machine.

In operation, the platform having been loaded with a supply of papersheets and engaged with the uprights .18, the sheaves and cables beingin 'position,'the first adjustment or rise of the platform isaccomplished'by using the handwheel 5 1, bring A constant suction ismaintained in the pipe 75, communicated to the tube 73 and thence to thesucker heads, which are lowered to engage the uppermost sheet, raisedand advanced forward due to the cam 68, to bring rolls 99 and wheels 98,causing them to grasp the sheet which is then liberated from the suckersdue to the escape of air through the port 85.

The rolls and friction Wheels then advance the sheet upon the fingers100, the next sheet being confined by the fingers 91,

which, as has been seen are moved out of the way u on the descent of thesuckers for the next s eet.

It isto be noted that the sharp spurs of the elements 87 act to raisethe edges of the sheets, allowing the entrance of air between,coincidently with the raisin efiectof the suckers, assuring a positiveeed of a single sheet only.

Although the foregoing is descriptive of the adhering sheet between thethe preferred embodiment of the machine, it is intended to beillustrative rather than restrictive and it is within the scope of theappended claims to make minor changes which do not embrace invention.

Having thus described my invention, what I claim as new and desire tosecure by Letters Patent, is

1. A paper feeding apparatus having a pair of uprights, drums at theends of a orizontal shaft rotatable in the uprights, a platformed truck,means for detachably engaging said truck to the uprights to slidethereon, sheaves rotatably engaged in said truck, and cables operated bysaid drums engaging said sheaves.

2. A paper feeding apparatus having a pair of'stationary uprights, awheeled platform slidable thereon, means for intermittently raising theplatform by power, means on said platform for automatlcallydisconnecting the raising means, means for retaining the platform whenin a raised position, and means for detaching the platform bodily fromthe apparatus.

In witness whereof I have afiixed my signature. HENRY KREJOA.

